<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html lang="en">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <title>animation.cpp 示例文件 | Qt Widgets 5.12.3</title>
  <link rel="stylesheet" type="text/css" href="style/offline-simple.css" />
  <script type="text/javascript">
    document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css");
    // loading style sheet breaks anchors that were jumped to before
    // so force jumping to anchor again
    setTimeout(function() {
        var anchor = location.hash;
        // need to jump to different anchor first (e.g. none)
        location.hash = "#";
        setTimeout(function() {
            location.hash = anchor;
        }, 0);
    }, 0);
  </script>
</head>
<body>
<div class="header" id="qtdocheader">
  <div class="main">
    <div class="main-rounded">
      <div class="navigationbar">
        <table><tr>
<td ><a href="../qtdoc/index.html">Qt 5.12</a></td><td ><a href="qtwidgets-index.html">Qt Widgets</a></td><td ><a href="qtwidgets-animation-stickman-example.html">Stickman Example</a></td><td >animation.cpp 示例文件</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right"><a href="qtwidgets-index.html">Qt 5.12.3 参考指南</a></td>
        </tr></table>
      </div>
    </div>
<div class="content">
<div class="line">
<div class="content mainContent">
<div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div>
<h1 class="title">animation.cpp 示例文件</h1>
<span class="subtitle">animation/stickman/animation.cpp</span>
<!-- $$$animation/stickman/animation.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">

  <span class="comment">/****************************************************************************
  **
  ** Copyright (C) 2016 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the QtCore module of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:BSD$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and The Qt Company. For licensing terms
  ** and conditions see https://www.qt.io/terms-conditions. For further
  ** information use the contact form at https://www.qt.io/contact-us.
  **
  ** BSD License Usage
  ** Alternatively, you may use this file under the terms of the BSD license
  ** as follows:
  **
  ** &quot;Redistribution and use in source and binary forms, with or without
  ** modification, are permitted provided that the following conditions are
  ** met:
  **   * Redistributions of source code must retain the above copyright
  **     notice, this list of conditions and the following disclaimer.
  **   * Redistributions in binary form must reproduce the above copyright
  **     notice, this list of conditions and the following disclaimer in
  **     the documentation and/or other materials provided with the
  **     distribution.
  **   * Neither the name of The Qt Company Ltd nor the names of its
  **     contributors may be used to endorse or promote products derived
  **     from this software without specific prior written permission.
  **
  **
  ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  ** &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.&quot;
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/</span>

  <span class="preprocessor">#include &quot;animation.h&quot;</span>

  <span class="preprocessor">#include &lt;QPointF&gt;</span>
  <span class="preprocessor">#include &lt;QVector&gt;</span>
  <span class="preprocessor">#include &lt;QIODevice&gt;</span>
  <span class="preprocessor">#include &lt;QDataStream&gt;</span>

  <span class="keyword">class</span> Frame
  {
  <span class="keyword">public</span>:
      Frame() {
      }

      <span class="type">int</span> nodeCount() <span class="keyword">const</span>
      {
          <span class="keyword">return</span> m_nodePositions<span class="operator">.</span>size();
      }

      <span class="type">void</span> setNodeCount(<span class="type">int</span> nodeCount)
      {
          m_nodePositions<span class="operator">.</span>resize(nodeCount);
      }

      <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> nodePos(<span class="type">int</span> idx) <span class="keyword">const</span>
      {
          <span class="keyword">return</span> m_nodePositions<span class="operator">.</span>at(idx);
      }

      <span class="type">void</span> setNodePos(<span class="type">int</span> idx<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> <span class="operator">&amp;</span>pos)
      {
          m_nodePositions<span class="operator">[</span>idx<span class="operator">]</span> <span class="operator">=</span> pos;
      }

  <span class="keyword">private</span>:
      <span class="type"><a href="../qtcore/qvector.html">QVector</a></span><span class="operator">&lt;</span><span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span><span class="operator">&gt;</span> m_nodePositions;
  };

  Animation<span class="operator">::</span>Animation()
  {
      m_currentFrame <span class="operator">=</span> <span class="number">0</span>;
      m_frames<span class="operator">.</span>append(<span class="keyword">new</span> Frame);
  }

  Animation<span class="operator">::</span><span class="operator">~</span>Animation()
  {
      <a href="../qtcore/qtalgorithms.html#qDeleteAll">qDeleteAll</a>(m_frames);
  }

  <span class="type">void</span> Animation<span class="operator">::</span>setTotalFrames(<span class="type">int</span> totalFrames)
  {
      <span class="keyword">while</span> (m_frames<span class="operator">.</span>size() <span class="operator">&lt;</span> totalFrames)
          m_frames<span class="operator">.</span>append(<span class="keyword">new</span> Frame);

      <span class="keyword">while</span> (totalFrames <span class="operator">&lt;</span> m_frames<span class="operator">.</span>size())
          <span class="keyword">delete</span> m_frames<span class="operator">.</span>takeLast();
  }

  <span class="type">int</span> Animation<span class="operator">::</span>totalFrames() <span class="keyword">const</span>
  {
      <span class="keyword">return</span> m_frames<span class="operator">.</span>size();
  }

  <span class="type">void</span> Animation<span class="operator">::</span>setCurrentFrame(<span class="type">int</span> currentFrame)
  {
      m_currentFrame <span class="operator">=</span> <a href="../qtcore/qtglobal.html#qMax">qMax</a>(<a href="../qtcore/qtglobal.html#qMin">qMin</a>(currentFrame<span class="operator">,</span> totalFrames()<span class="operator">-</span><span class="number">1</span>)<span class="operator">,</span> <span class="number">0</span>);
  }

  <span class="type">int</span> Animation<span class="operator">::</span>currentFrame() <span class="keyword">const</span>
  {
      <span class="keyword">return</span> m_currentFrame;
  }

  <span class="type">void</span> Animation<span class="operator">::</span>setNodeCount(<span class="type">int</span> nodeCount)
  {
      Frame <span class="operator">*</span>frame <span class="operator">=</span> m_frames<span class="operator">.</span>at(m_currentFrame);
      frame<span class="operator">-</span><span class="operator">&gt;</span>setNodeCount(nodeCount);
  }

  <span class="type">int</span> Animation<span class="operator">::</span>nodeCount() <span class="keyword">const</span>
  {
      Frame <span class="operator">*</span>frame <span class="operator">=</span> m_frames<span class="operator">.</span>at(m_currentFrame);
      <span class="keyword">return</span> frame<span class="operator">-</span><span class="operator">&gt;</span>nodeCount();
  }

  <span class="type">void</span> Animation<span class="operator">::</span>setNodePos(<span class="type">int</span> idx<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> <span class="operator">&amp;</span>pos)
  {
      Frame <span class="operator">*</span>frame <span class="operator">=</span> m_frames<span class="operator">.</span>at(m_currentFrame);
      frame<span class="operator">-</span><span class="operator">&gt;</span>setNodePos(idx<span class="operator">,</span> pos);
  }

  <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> Animation<span class="operator">::</span>nodePos(<span class="type">int</span> idx) <span class="keyword">const</span>
  {
      Frame <span class="operator">*</span>frame <span class="operator">=</span> m_frames<span class="operator">.</span>at(m_currentFrame);
      <span class="keyword">return</span> frame<span class="operator">-</span><span class="operator">&gt;</span>nodePos(idx);
  }

  <span class="type"><a href="../qtcore/qstring.html">QString</a></span> Animation<span class="operator">::</span>name() <span class="keyword">const</span>
  {
      <span class="keyword">return</span> m_name;
  }

  <span class="type">void</span> Animation<span class="operator">::</span>setName(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&amp;</span>name)
  {
      m_name <span class="operator">=</span> name;
  }

  <span class="type">void</span> Animation<span class="operator">::</span>save(<span class="type"><a href="../qtcore/qiodevice.html">QIODevice</a></span> <span class="operator">*</span>device) <span class="keyword">const</span>
  {
      <span class="type"><a href="../qtcore/qdatastream.html">QDataStream</a></span> stream(device);
      stream <span class="operator">&lt;</span><span class="operator">&lt;</span> m_name;
      stream <span class="operator">&lt;</span><span class="operator">&lt;</span> m_frames<span class="operator">.</span>size();
      foreach (Frame <span class="operator">*</span>frame<span class="operator">,</span> m_frames) {
          stream <span class="operator">&lt;</span><span class="operator">&lt;</span> frame<span class="operator">-</span><span class="operator">&gt;</span>nodeCount();
          <span class="keyword">for</span> (<span class="type">int</span> i<span class="operator">=</span><span class="number">0</span>; i<span class="operator">&lt;</span>frame<span class="operator">-</span><span class="operator">&gt;</span>nodeCount(); <span class="operator">+</span><span class="operator">+</span>i)
              stream <span class="operator">&lt;</span><span class="operator">&lt;</span> frame<span class="operator">-</span><span class="operator">&gt;</span>nodePos(i);
      }
  }

  <span class="type">void</span> Animation<span class="operator">::</span>load(<span class="type"><a href="../qtcore/qiodevice.html">QIODevice</a></span> <span class="operator">*</span>device)
  {
      <span class="keyword">if</span> (<span class="operator">!</span>m_frames<span class="operator">.</span>isEmpty())
          <a href="../qtcore/qtalgorithms.html#qDeleteAll">qDeleteAll</a>(m_frames);

      m_frames<span class="operator">.</span>clear();

      <span class="type"><a href="../qtcore/qdatastream.html">QDataStream</a></span> stream(device);
      stream <span class="operator">&gt;</span><span class="operator">&gt;</span> m_name;

      <span class="type">int</span> frameCount;
      stream <span class="operator">&gt;</span><span class="operator">&gt;</span> frameCount;

      <span class="keyword">for</span> (<span class="type">int</span> i<span class="operator">=</span><span class="number">0</span>; i<span class="operator">&lt;</span>frameCount; <span class="operator">+</span><span class="operator">+</span>i) {

          <span class="type">int</span> nodeCount;
          stream <span class="operator">&gt;</span><span class="operator">&gt;</span> nodeCount;

          Frame <span class="operator">*</span>frame <span class="operator">=</span> <span class="keyword">new</span> Frame;
          frame<span class="operator">-</span><span class="operator">&gt;</span>setNodeCount(nodeCount);

          <span class="keyword">for</span> (<span class="type">int</span> j<span class="operator">=</span><span class="number">0</span>; j<span class="operator">&lt;</span>nodeCount; <span class="operator">+</span><span class="operator">+</span>j) {
              <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> pos;
              stream <span class="operator">&gt;</span><span class="operator">&gt;</span> pos;

              frame<span class="operator">-</span><span class="operator">&gt;</span>setNodePos(j<span class="operator">,</span> pos);
          }

          m_frames<span class="operator">.</span>append(frame);
      }
  }

</pre>
</div>
<!-- @@@animation/stickman/animation.cpp -->
        </div>
       </div>
   </div>
   </div>
</div>
<div class="footer">
   <p>
   <acronym title="Copyright">&copy;</acronym> 2019 The Qt Company Ltd.
   Documentation contributions included herein are the copyrights of
   their respective owners.<br/>    The documentation provided herein is licensed under the terms of the    <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation    License version 1.3</a> as published by the Free Software Foundation.<br/>    Qt and respective logos are trademarks of The Qt Company Ltd.     in Finland and/or other countries worldwide. All other trademarks are property
   of their respective owners. </p>
</div>
</body>
</html>
